Azo compounds are chemical compounds that contain RN=NR′ as a functional group. Derivatives containing aryl groups are more stable. Oxidation of hydrazine (R-NH-NH-R′) is a method for the synthesizing of azo compounds. Aromatic azo compounds are more common and can be synthesized by azo coupling reaction, which is an electrophilic substitution reaction of diazonium salt on aromatic ring. [ 1 1. Zollinger , H. 1961. Azo and Diazo Chemistry, Aliphatic and ...
